--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/g++.dg/cpp2a/array-conv15.C	Thu Feb 13 11:34:05 2020 +0900
@@ -0,0 +1,23 @@
+// PR c++/69531 - DR 1307, Overload resolution based on size of array init-list.
+// { dg-do run { target c++2a } }
+
+int f(int, int const(&)[2]) { return 1; }
+int f(double, int const(&)[2]) { return 2; }
+
+int f2(int, int const(&)[1]) { return 1; }
+int f2(int, int const(&)[2]) { return 2; }
+
+int f3(int, int const(&)[]) { return 1; }
+int f3(double, int const(&)[]) { return 2; }
+
+int main ()
+{
+  if (f (1, {1}) != 1)
+    __builtin_abort ();
+
+  if (f2 (1, {1}) != 1)
+    __builtin_abort ();
+
+  if (f3 (1, {1}) != 1)
+    __builtin_abort ();
+}